CAJ | 학술논문

为解决超声相控阵检测列车轮辋易出现的成像质量低和缺陷识别困难等问题，分析相控阵换能器声压特性，获取合适的缺陷检测深度，讨论轮辋界面及耦合情况对成像质量的影响，开展轮辋试块相控阵检测实验。以水平孔和管穿槽缺陷为例，研究不同深度缺陷的回波幅值变化特点及成像质量，并通过与平面试块对比分析，获得轮辋相控阵成像质量的主要影响因素和影响规律，为改进轮辋超声相控阵检测工艺和提高缺陷检测精度提供参考。
위해결초성상공진검측열차륜망역출현적성상질량저화결함식별곤난등문제，분석상공진환능기성압특성，획취합괄적결함검측심도，토론륜망계면급우합정황대성상질량적영향，개전륜망시괴상공진검측실험。이수평공화관천조결함위례，연구불동심도결함적회파폭치변화특점급성상질량，병통과여평면시괴대비분석，획득륜망상공진성상질량적주요영향인소화영향규률，위개진륜망초성상공진검측공예화제고결함검측정도제공삼고。
To solve the problem of low image quality and defect identification difficulty when using ultrasonic phased array to inspect train wheel rim,the sound pressure characteristics of phased array transducer were ana-lyzed.Besides,the suitable detection depth was obtained as well.The effects of the rim contact surface and cou-pling status for the image quality were analyzed.An ultrasonic phased array inspection experiment was carried out on a wheel rim test block.Taking a horizontal hole and a slot as defect examples,the echo amplitude chan-ging characteristic and image quality were studied.By comparing with flat block analysis,the main factors and influencing rule for ultrasonic phased array imaging quality were obtained.The study provides a reference to im-prove the ultrasonic phased array inspection process and the accuracy of defect detection for rim.